So I'm helping my father in-law set up his battery system in his 37' Fisher live-aboard motorsailer (not sure if this is the correct term) and need a little guidance.

He has 2 banks of batteries with 4-6v batteries in each bay and a pergo switch between the two. The batteries are toast(5yrs old) so we are putting in new batteries and solar system and after lots of research here is what we've come up with so far.